Rail motor-car.



L.1.1. CHNEAU.

RAIL Moron CAR.

APPLICATION FILED IULY 9a I9I4 Patented Dec. 18,1917. 6 SHEETS-SHEET 2.

L.1.1`. B. QHNEAU.

'RAIL MOTOR GAR.

APPLICATION FILED IULY91-914 v Patent-ed Dec; 18, :1917.

6 SHEETS-SHEET 3.

L.1.1. B. cruz-meml- BML MoToR CAR.

L. J. 1. B. CHENEAU.

/ RAIL MOTOR CAB.

vAPPLICATION FILED .IULY 9| l9l4 I I 1,250,797. Patented Dec. 18,1917.

. l 6 SHEETS-SHEET 5.

L. 1.1.-. CHENE/xu.

RAIL moon CAR. APPLICATION FILED JULY 9. 19.14.

9 1 ou, 1 nu. .e D 1U, m Lw a P z@ 6. Q .9 g E f /VQ i /LL 4 I lN 'Rg'. lsf

K j TES LOUIS JOSEPH JEAN BAPTISTE CII-INEAU, PARS,CF.RANCE.

,BML aforos-CAR.y f

To all whom, it may concern Be it known that I', LOUIS 'JOSEPH JEAN BAPTISTE CHNEAU, engineer, a citizen ofthe VFrench Republic, residing at Paris, Rue

St. Georges, France, have invented certain new and useful 'Improvements in Rail Motor-Cars, of which the-following is a specilication. I y This invention` relates to rail motor cars and has for its main object to construct in such a manner, the rail motor cars that may be able to yrun on a smooth track regardless the inclination of the said track.

The invention consists mainly inproviding the rail motor cars with means insuring their adhesion on the .rails in consequence of a wedging action produced by the weight of the said cars.

lt consists further lin using, for constituting the said means, levers `hinged to the ysaid cars and provided with rollers bearingon the lower face of one of the rails,von the upper face lof which the wheels'of the car bear, or onanot-her rail. l

VIt consists also in provi several driving axles, withmeans connecting the levers corresponding tothe saidaxles in such a manner that the resisting effort be suitably distributed on the said axles.v

The inventionl consists also in some'other yfeatures of construction, arrangement Aand setout hereinafter. y The invention will be vmore clearly understood with the aid of the following description and of y the accompanying drawings which are merely given by way of example.

T he Figures l and 2 show respectively in elevation and in transverse section taken on line 2-2-of Fig. l a rail motor car constructed according to the invention. f i

The Fig. 3 shows in the same manner as Fig. 2 a modification of the said rail motor car constructed according to the invention.

`T he Figs. 4 and 5 showy respectively in Ielevation and in longitudinal section a second rail motor car constructed accordingtothe invention. 1' i The Fig. 6 shows inl longitudinalf'section a third rail motor car const rucned-according tothe invention. f

combination of -parts which will be'cle'arly ding cars, having The Fig. -7 shows infront elevation a Spea'flvlof Letters Patent. Patented Dee. 18,1917. I A 'Application inea July 9,1914. 'serial N. 856,040.

fourth rail motor carconstructed according to the invention. v v

The F ig.' l8 shows a vertical vvsection' vof a part ofa fifth rail motor constructed according to the" im'ention.v

The Figsj't), l() and'll'show respectively infhalf elevation'and'half section with parts broken away,v in plane, andv 'in section "according to the vline 11-11 ('FigL` 9)"asixth rail motor car constructedaccording to the motor car runs on a rail-way track constif tuted'with two traction rails.

rIhe cary comprises afrarnea'on which, is Inounted` the motor; the said 'frame/lis provided, as shown in Figs. l'to 8, lfor instance with two axles b, @,fone of the said axles,

posi- The Figs. 13 and l show respectively in the rear axle Z) carrying for instance the driving wheels b1 while the other axle fc car: ries the free "wheels al.

The frame -a is n further provided with means wedging the car on the rail, the said I in front of the driving wheels b1., Thef'rolly ersdl bear either, as shown in Figs. land 2, onthe lower face of the rails on the upper face of V whichV the ywheels b1 and o1 zbear, or,

asshown in'Fig. 3, on rails being independent froln the railsofthe track, Y

If thevariouspartsof such a car' haveY v Y been suitablyideterm'ined,the {saidca-r will beI able either to remain motionless on'` 'aj smooth vertical track or't'o ascend in run-i ning-on suclia vertical track; consequently it will be also able to remain motionless or motor car in which: G is the center ofM gravity of th'e'fsaid motorcar;iP its weight; the distance between the center G and the track; N the resultant of the reactions of the track on the driving wheels b1; N1 the resultant'of the reactions ofthe track on'the rollers d1; f the coetlicient of` rolling friction of the wheels b1 and of the rollers (Z1A on the l rails; Zv the dist-ance between the axle of the v preferably constructed in such a 'rollers d1 andtle axle of the, driving wheels b1; P1 the weight of the vehicles dragged by the said `motor car; Z1 the distance between the draw-hoek ofthe said car andthe track.

.In order that thel car may remain motionless or ascend on the track at a constant speed, itis necessary and suflicient that the algebraical siim'of kthe projections of the forcesapplied to the motorjcar on two axes whch are in theplane of the` said forces (for instance on the lcngitudinal axis ofthe track and on an axis which is perpendicularto the said axis) and the algebraical sum of the momentum ofthe said forces with respect to a point of the said plane (for instance the middle point B of the line connecting the contact points of the rollers (Z1 with the track) be null; and consequently vthat the three followingI equations are obtained:

which may be reduced to the two following equations n P-l-Pl-:Q'N (-1) PZ-l-PlllzNZo. (2)V i .In Vthe case where the Vdraw-hook is at the (ra-r1 )renzo Y (n or? Y Z0 las' This last equation gives a condition which is independent frein the weight of the motor car andv of its train of vehicles. V

Inorder to increase the` adhesion the car is manner o Y that Ythe value of Z be lower than {.Vhen the motor descends, andV runs for-A ward along the track, the weight of the car andthe train of vehicleshas no greatertend ency to press the driving wheels of the car against the rails of the track than it has to Vto be longitudinally displaced.

remove the wheels frcm the said rails, since means are provided for exerting a braking action in order to prevent the vehicles from run'ningaway, as will be apparent` from the following description.

i-Kdva'ntageously the following features .may also beusedi:

T he Aframe a may be provided with guides a0 as-shown in F ig. i which allow the aXle Tlieicar may also be provided, as shown in Figsta and. @with two bent levers c which are hinged to the axle b and are formed with two arms e", e1 the rollers' Z1 are1 'then Vmounted.l.oose onpinsffxed tothe end ofthe arms el, and the motor car is provided with meansobliging thesaid levers@v to support thev weight of the car and of its Vdragged vehicles.- The said means are, for instance, constituted by two .abutments mounted on each side of the arm e0 of the levers or, as shown in Figs. a and 6,-by apin g engaged in a hole provided? near'the end of the said arms e". Consequently the weight ofl the motor car and of its dragged vehicles being applied at the endl of the arms-e will press constantly on the Arails the wheels b1 andthe rollers all, whatever may be the form of the track.

Thewheels 1 may be fixedon their axle ),k

and the said axle b may be then set into rotation` as show-n in Fig. V6, by means of a worm it mounted on the motor shaft and of a worm wheel- 2. Y

lVith such `a feature, as the. driving by meansof worm and worm wheel is not a reversible one, the axle b can no morerotate if themotor stops-and consequently the-'car remains motionless. Furthermore the vaxle Z) may b e displaced longitudinally with respect to the' frame a, as the worm wheel b2 is able to' rollv on the worm iv in the same mannerasa/toothed wheelA rolls onra rack. The. levers @may rbeadvantageously prov-idel with a thirdl arm4 e? `disposed symmetrically to the arm e1 withrespect to'a plane perpendicular to the 'track and passing through the axis of the axle b. The endA of the said arms e2 carries'rollers l disposed symmetrically to the rollers D1 with respect to the same plane.y The said rollers 1 act, when the car descends, in the same manner as the rollers Z1 when thecar ascends.; and they allow,5 consequently the' braking means to be dispensed with.i Y

Straight levers j could be substituted for the bent levers e, as. shown in Fig. 7l Each.

one of the saidstraight levers will then carry at its end a roller Z1 which will produce a w'edgi-ng action as well when the car :is

llt

'I the cross bar,l rlhe weight of the motor car and of'its draggedvehicles 'is'then applied ony the said arm e3" either, as shown on Fig.

'8,-by` means of' a cross baiI passing through a hole provided in thesaidarm, or by means of twofabutinents fixed to the; car on each side of the said arm.

- 'If vthe rear.v wheels arethe driving wheels, .the draw-hook is fixedat the lower part of `theV car,n and the buffer at the upper part of the said car;`and if thefrontwheels are the driving wheels, the draw-hook is fixed at the upper part 'andthe buffers at the I -V lower part o'f the car, in order that the weight of' the dragged vehicles acts always,

as well when ascending as when descending 'along the track, to press the driving wheels of the motor car against the rails.

' he motorcar could also be provided with several driving axles b, for instance two drivingy axles as shown in Figs.9 to 16.

The saidaxles are then mounted in such .a manner that they can be displaced longitudinallv with'rcspect to the frame a. Y On each one of the-said axles two levers eare hinged.l The said levers are constituted 4in the same manner as those liereinbefore described with three arms e9' el 62,' 7 7 7 7 the arms el and e2 being symmetrically dis- "posed with respect to a plane perpendicular tothe track and passingthrough the axis of the axle. TheV endof the arms e1 and 62 carries alsorollersc'l1 and il.

Furtherniorethe two levers e which are mounted on the same side of the car are connected to an endless chain 7c mounted on two chain wheels m. The said chain wheels arefmounted'respectively at the corresponding ends of levers n rotatably mounted on axis o. The axis o for the said levers n are lix'ed at both ends ofthe frame la in the longitudinal plane of symmetry of the said frame.

W'hen the inotor car is on avertical or inclined track, itsr weight as well as the weight of its draggedl vehicles acts through the levers n and thechains on the arms cf of the levers e. The said levers e have then tendency to turn around their pivot and press the wheels b1 as well as the rollers d1 against both faces of the track, wedging thus the motor car on the track.

As the levers e which are mounted on the same side of the car are connected by means of the corresponding chain c, the resisting effort is equally distributed between the said levers and consequently between the driving axles.

If the longitudinal section of the track is a curved one,v the two levers on the same side of the cars being obliged to converge toward the center of the curve, are inclined the one toward the other, and this moveable gearing by Yment rendered more `easy by thef'chain which connects them.

'If an iinevenness ofthe track causes one only of the levers to oscillate, as shown in Fig. 12, the point A of the chain to whichv is tixe'd the said lever being brought at A1 the said lever exerts a traction on thezpart lc? of the chain, but the point B to which is A attached the other lever @remains motionless and the chain wheels on which are mounted the` said chains are displaced 'by "a quantity equalto i the chain wheels of the other chain remain motionless and the axis o as well as the frame on which they are fixed are displaced of a quantity equal to t `AA1' Such a motor car with two driving axles has a greater stability on the track than those with one driving axle; the stresses on y.the parts insuring the sustentation and the adhesion are reduced; the security is greater.

Advantageously the axle boxes of the axles are connected bymeans of bars p or the 'like which oblige the distance between the said axles to remainalways the same.

The frame a could be provided also as lShown in Fig. 12 with abutments a1 which limit the movement of rotation of the levers n which would be produced if one of thestatements 702 (Fig. i2) which hav-@for their object to bear on the levers n if their corresponding chain is broken.

VThe adhesion could be increased by using, asrollersl1L and il, drivingrollers. which Vare set .for instance into rotation through a suitchains.

Instead of endless chains or ropes, chains or ropes passing on a tackle q as shown in Fig. 15 and having'their ends fixed to the levers n could be used. Y

The levers n could also be directly fixed to the levers c as shown in Fig. 1G. Then the said levers n are connected together by means of connecting rods r hinged respectively to the middle of the said levers nr and to the ends of a lever s pivoted on an axis t fixed to the frame a.

It is understood that the invention is not in any way limited to the dispositions which have been hereinbefore described but that it comprises also all the modifications which are comprised in the Vscope of the claims.

means of the 'axles @as track and passing through the axis of they driving axle, rollers symmetrically disposed with respect to the same plane being mounted at the end of the said arms and bearing on the lower face of rails of the track.

2. A rail motor car provided with levers pivoted on the driving axles and carrying the rollers bearing on the lower face of rails l of the track, and means for obliging the said levers to support the weight f the car and of its dragged vehicles.

3. A rail motor car provided with levers pivoted on the driving axles and carrying the rollers bearing on the lower face of rails of the track, a pin fixed to the frame of the car and passing through holes of the said levers.

4. A rail motor car provided with rollers bearing on the lower face of rails ofthe track while the wheels of the said car bear on the upper part of rails of the said track,

the driving axles of the said car being mounted in such a manner that they may be displaced longitudinally.

5. A-rail motor car provided with rollers bearing on the lower face of rails of the track while the wheels of the said car bear on the upper part of lrails of the said track,

the driving wheels being fixed to the driving axles which are set in rotation by means of a worm and a worm wheel.

6. A rail motor Car having several driving axles and levers pivoted on the said driving axles and carrying the rollers bearing on the lower face of rails of the track,

and means for distributing the resisting effort on the said axles.

7.' A rail motor car havingtwo `driving axles, levers pivoted on vthe said driving axles and carrying the rollers bearing on the lower face of rails` of the track, a chain connectingy the levers mounted on the same side of the car, levers pivoted atthe ends of the framel of the car and carrying chain wheels on which the said chains pass. y

8. A rail motor car having two driving axles, levers ypivoted on the said driving axles and carrying the rollers bearing on the lower face ofy rails ofthe track, a ychain connecting the levers mounted on thesame side of the car levers pivoted 'at the ends lof vthe frameof the' car and carrying. chain-` wheels on which the said chains pass and abutments `preventing the rotation of the levers pivoted at the ends of the frame if ka chain is broken.

9. A'rail motor car having twovdriving axles, levers pivoted on the said driving` axles and vcarrying the rollers bearing on the lower face ofrails of the track, a chain connecting the levers mounted on the same side of the car levers pivoted at the ends of the frame of thek car and carrying chain wheels on which the said chains pass and abutments fixed to the chains which bear on .the levers pivoted at theV ends of the frame if a chain isibroken.

10. 'A rail motor car having several driving axles and levers pivoted on the said .driving axles and carrying the rollers bear`- ing on the lower face of rails of the track, and means forA distributing the resisting effort on the said axles and means connecting the driving axles .for maintaining them at a constant distance.

In testimony whereof I have hereuntoset my hand in presence of two subscribing witnesses. A i

LOUIS JOSEPH JEAN BAPTISTE CHENEAU.

Witnesses: v

CHAs. P. PREssLY, PAUL BLUM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

